Constraints on the Density Dependence of the Symmetry Energy

被引：628

作者：

Tsang, M. B. ^{[1
,2
,5
]}

Zhang, Yingxun ^{[1
,3
,5
]}

Danielewicz, P. ^{[1
,2
,5
]}

Famiano, M. ^{[4
]}

Li, Zhuxia ^{[3
]}

Lynch, W. G. ^{[1
,2
,5
]}

Steiner, A. W. ^{[1
,2
,5
]}

机构：

[1] Michigan State Univ, Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA

[2] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[3] China Inst Atom Energy, Beijing 102413, Peoples R China

[4] Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA

[5] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 12期

基金：

美国国家科学基金会;

关键词：

HEAVY-ION REACTIONS; NEUTRON-STARS; EQUATION; PHYSICS; NUCLEI; MATTER; STATE;

D O I：

10.1103/PhysRevLett.102.122701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Collisions involving Sn-112 and Sn-124 nuclei have been simulated with the improved quantum molecular dynamics transport model. The results of the calculations reproduce isospin diffusion data from two different observables and the ratios of neutron and proton spectra. By comparing these data to calculations performed over a range of symmetry energies at saturation density and different representations of the density dependence of the symmetry energy, constraints on the density dependence of the symmetry energy at subnormal density are obtained. The results from the present work are compared to constraints put forward in other recent analyses.

引用

页数：4

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